3.14 -3.15 (PS) ASSESSMENT REVIEW
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Science
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is electronegativity?
Back
The ability of an atom to attract/accept electrons.
2.
FLASHCARD QUESTION
Front
How many valence electrons does Iodine have?
Back
Iodine has 7 valence electrons.
3.
FLASHCARD QUESTION
Front
How are elements arranged in the modern periodic table?
Back
Elements are arranged by atomic number.
4.
FLASHCARD QUESTION
Front
What fundamental property did Moseley discover was needed for organization of the periodic table?
Back
The atomic number.
5.
FLASHCARD QUESTION
Front
Which elements are arranged in order of increasing atomic number: Sr, Ca, Mg, Be or F, Cl, Br, I?
Back
F, Cl, Br, I are arranged in order of increasing atomic number.
6.
FLASHCARD QUESTION
Front
Define atomic number.
Back
The number of protons in the nucleus of an atom, which determines the element's identity.
7.
FLASHCARD QUESTION
Front
What is the significance of valence electrons?
Back
Valence electrons determine an atom's chemical properties and its ability to bond with other atoms.
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